a ladies man and player (in the sexual sense) who also has a knack for stealing other mens' girlfriends at parties and other social events.

a guy and his girlfriend in conversation:

guy: Listen sweetie, Emily. I am a Martian, and therefore have to consider it my duty to warn you that at parties, my father can sometimes get carried away and become aDon Juan.

Emily (shrieking): What? Are you serious? As a Venusian, I would like to know how your mother would handle such a situation.

Carl: Well. I don't get on that well with my dad anyways, and, besides you are welcome to ask my old lady that question, but not at tomorrow's party though; otherwise you'd be committing what in my family is called lol a party foul.

Emily: well, in that case I will watch your father's behavior carefully throughout tomorrow's party, and later in the week ask your mom about it, and then decide for myself whether your father is a true Don Juan or not, but for now, lol, please stop hitting the sauce when it comes to talking about your dad. He is after all your dad.